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A scalable PQ event identification system

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5 Author(s)
S. Santoso ; Electrotek Concepts Inc., Knoxville, TN, USA ; J. Lamoree ; W. M. Grady ; E. J. Powers
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A scalable event identification system for power quality events is proposed. Unlike ANN-based approaches where the system is not scalable and not “debug-able” without retraining, the proposed approach is particularly advantageous compared to those of ANN's since it is scalable, debug-able and easily modified. This approach is adopted from artificial intelligence's rule-based approach and attempts to mimic power engineers thought process in identifying PQ events. This paper describes prerequisites in constructing such a scalable system. Examples of rules to identify power quality event are also presented. The prototype of the system is built and tested using 770 field-measured voltage waveforms which covers ten types of PQ events. The accuracy rate is nearly 95% with less than 6% of rejection rate. Potential applications of the proposed system in PQ community are also described

Published in:

IEEE Transactions on Power Delivery  (Volume:15 ,  Issue: 2 )